National Medical Journal of China, Volume 99, Issue 19,2019, Pages 1514-1515, doi:10.3760/cma.j.issn.0376-2491.2019.19.017
National Medical Journal of China, Volume 99, Issue 19,2019, Pages 1517-1518, doi:10.3760/cma.j.issn.0376-2491.2019.19.019
National Medical Journal of China, Volume 99, Issue 19,2019, Pages 1468-1472, doi:10.3760/cma.j.issn.0376-2491.2019.19.007
National Medical Journal of China, Volume 99, Issue 19,2019, Pages 1460-1467, doi:10.3760/cma.j.issn.0376-2491.2019.19.006